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Advice
Data & AI

Custom CRM: Why and How to Have Yours Developed

Custom CRM vs. Salesforce/HubSpot: A Data-Driven Case Study (€250,000 in Savings Over 3 Years). Timelines, Costs, Benefits, and the Process for Developing a CRM Tailored to Your Business.

Custom CRM: Why and How to Have Yours Developed

Your sales team uses Salesforce, HubSpot, or Dynamics. The software is powerful, but here’s the reality: you’re paying thousands of euros a year for features you don’t use, your sales process doesn’t fit the software’s templates, and your sales reps are using Excel spreadsheets alongside it.

What if the problem wasn't your team, but the tool itself?

A custom CRM is customer relationship management software developed specifically for your processes, business rules, and users. It costs less than you might think, can be deployed in a matter of weeks, and you own it outright. In this article, we explain when it’s the right choice, how much it costs, and share a detailed case study.

If you’re not yet familiar with business software, start by checking out our comprehensive guide, “ Business Software: Definition, Benefits, and Custom Development ."

Why SMEs Are Switching from Their Standard CRM Systems

Generic CRMs (Salesforce, HubSpot, Pipedrive, Dynamics) are designed to cater to as many businesses as possible. This is both their strength and their limitation. Here’s what our clients consistently tell us:

Costs that are skyrocketing as the company grows

Standard CRMs charge per user. Add 10 sales reps, and your bill goes up by several thousand euros a year. For a team of 50 users, Salesforce licenses alone cost over €200,000 over three years—not including integration and migration.

70% of unnecessary features

You’re paying for a tool designed for businesses all over the world. The result: dozens of modules you never use, a cluttered interface, and sales reps who work around the tool instead of embracing it.

A sales process that doesn't fit into a box

Your sales cycle has its own unique characteristics: stages specific to your industry, unique qualification rules, and internal approvals that standard CRM systems don’t natively support. So we end up tinkering with the system, adding custom fields, and eventually losing visibility into the pipeline.

No control over your data

Your customer data is hosted on U.S. servers, which are subject to the Cloud Act and the Patriot Act. You have no guarantee as to who has access to your business information.

Case Study: Custom CRM vs. Salesforce for 50 Users

Let’s take a concrete and illustrative example: a company with 50 users comparing the total cost of Salesforce over three years to that of a custom CRM system developed by IT Systèmes.

Cost center Salesforce IT Systems (Custom)
Bachelor's Degrees (3 years) 200 000 € 0 €
Setup / Integration 80 000 € Included
Data migration 20 000 € Free
TOTAL over 3 years 300 000 € < 50 000 €
✅ Direct savings: €250,000 over 3 years—a 83% reduction in costs. Plus: unlimited users, full ownership of the code, and hosting in France.

This comparison does not take into account the productivity gains associated with a tool that is perfectly tailored to your processes. When your sales reps truly embrace the tool (rather than working around it), conversion rates automatically improve.

What's Included in a Custom CRM from IT Systèmes

A custom CRM is not a “stripped-down” CRM. It’s a tool that includes exactly what you need—nothing more, nothing less:

A sales process fully tailored to your business: pipeline, qualification stages, management rules, and specific automations.

Built-in AI to automate lead generation: lead scoring, follow-up recommendations, predictive pipeline analysis, and personalized email generation.

Customized real-time dashboards: the KPIs that matter to YOU, not those imposed by a vendor.

Integrations with all your software: accounting, billing, ERP, marketing, telephony, Microsoft 365 — via API or Power Automate.

A modern and intuitive web interface: designed for YOUR users, not for a global market.

Unlimited users: Whether you hire 10, 50, or 200 salespeople, the cost stays the same.

And most importantly: the software is 100% yours. No dependence on a software vendor, no risk of price hikes, and no Cloud Act.

For your sales team’s repetitive tasks (follow-ups, pipeline updates, notifications), IT Systèmes can also deploy Power Automate as a complement to the CRM.

What does a custom CRM project entail?

At IT Systèmes, we don’t start with a 200-page requirements document. We start with a prototype.

01 — Quick Audit (free, 1–2 days)

We identify the tool that needs to be replaced, analyze your current sales processes, pain points, and opportunities for improvement. The result: you’ll know whether a custom solution is right for you.

02 — Working prototype (not a PowerPoint presentation)

In just a few days, we’ll create a working prototype of your CRM. You’ll be able to validate the results based on concrete examples, not abstract concepts. This approach drastically reduces misunderstandings and speeds up the launch process.

03 — Sprint-based development (2 weeks)

Iterative deliveries every two weeks. You can track progress in real time and adjust priorities as we go. Our team uses generative AI to speed up code production, testing, and documentation.

04 — Integration and Deployment

Integration with your existing systems (accounting, ERP, M365, telephony), full data migration (included), and training for your teams. Clean Architecture: the code is clean, well-documented, and can be taken over by any qualified developer.

05 — Continuous Evolution

Your CRM isn't set in stone. It evolves alongside your business: new features, new workflows, new integrations. Our contracts have no minimum term.

Total turnaround time: less than 50 days for a complete CRM system. Cost: less than €50,000, all-inclusive.

Who is a custom CRM for?

Custom CRM isn't the right solution for everyone. Here's how to decide:

Custom-made solutions are right for you if:

  • Your sales process has industry-specific features that standard CRM systems do not cover.
  • You have more than 20 users, and the cost per license is becoming an issue.
  • Your sales reps aren't using the current CRM (or are bypassing it with Excel).
  • You need to integrate the CRM with internal systems (ERP, line-of-business software, EDM).
  • Data sovereignty is a key issue (GDPR, regulated sectors, NIS2).

Stick with a standard CRM if:

  • Your needs are fairly standard and are well covered by HubSpot or Pipedrive.
  • You have fewer than 10 users and a very tight budget.
  • Your sales process is straightforward and doesn't require extensive customization.

Frequently Asked Questions About Custom CRM

How much does a custom CRM cost?

A complete CRM system (sales processes, AI, dashboards, integrations) for less than €50,000, developed in under 50 days. No per-user fees, no long-term commitment. Several support programs are available for small and medium-sized businesses: the research tax credit, the BPI France digital loan, regional digital vouchers, and France Num initiatives.

Is this a realistic alternative to Salesforce?

Oui. Notre étude de cas montre une économie de 83% sur 3 ans pour 50 utilisateurs (300 000€ Salesforce vs < 50 000€ IT Systèmes). Le CRM sur mesure couvre 100% de vos processus métier, inclut l’IA, les utilisateurs illimités et la propriété du code. Ce n’est pas un CRM « au rabais », c’est un CRM qui ne contient que ce qui est utile pour vous.

How long will it take to migrate from my current CRM?

Data migration is included and integrated into the project. The entire deployment process (development + migration + training) takes less than 50 days. Your teams will be up and running within the first week after the switchover.

Where is my data stored?

In France, IT Systèmes offers guaranteed sovereign hosting that is GDPR-compliant. You can also opt for on-premises hosting (on your own servers). No data passes through foreign servers.

What would happen if IT Systèmes went out of business?

The source code is 100% yours. It is well-documented, structured (Clean Architecture), and can be taken over by any qualified developer. This is the opposite of being dependent on a SaaS provider.

Stop overpaying for a CRM that doesn't fit your needs.

Book a free quick audit: within 1–2 days, we’ll analyze your current CRM, identify potential gains, and provide you with a precise ROI estimate.

→ Explore our offerings business software

→ Learn more about our expertise as a software developer and integrator

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